/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlet;

import java.io.IOException;
import java.io.InputStream;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.HashMap;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.annotation.Resource;
import javax.servlet.ServletException;
import javax.servlet.ServletOutputStream;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
import net.sf.jasperreports.engine.JRException;
import net.sf.jasperreports.engine.JRResultSetDataSource;
import net.sf.jasperreports.engine.JasperRunManager;


@WebServlet(name="customerServlet", urlPatterns={"/customerServlet", "/customerServlet?*"})

public class customerServlet extends HttpServlet {
    
    @Resource(name = "jasperjdbc")
    private DataSource jasperjdbc;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException, SQLException, JRException {
        //response.setContentType("text/html;charset=UTF-8");
       // PrintWriter out = response.getWriter();
            System.out.println("PROCESS REQUEST IN SERVLET");
            try{
        String strSQL = "SELECT * FROM CLIENTENTITY C INNER JOIN SALESLEADENTITY S ON C.ID = S.ID";
        ResultSet rsEvents = jasperjdbc.getConnection().prepareStatement(strSQL).executeQuery();
        JRResultSetDataSource jrResultSetDataSource = new JRResultSetDataSource(rsEvents);
        InputStream reportStream = (InputStream) getServletConfig().getServletContext().getResourceAsStream("/report/customer.jasper");
        System.out.print("Servlet");
        
        response.setContentType("application/pdf");
        ServletOutputStream outputStream = response.getOutputStream();
        System.out.print("REACHED SERVLET");
        HashMap parameters = new HashMap();

        JasperRunManager.runReportToPdfStream(reportStream, outputStream, new HashMap(), jrResultSetDataSource);
        System.out.print("Servlet2");   
        outputStream.flush();
        outputStream.close();
            /* TODO output your page here
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet customerServlet</title>");  
            out.println("</head>");
            out.println("<body>");
            out.println("<h1>Servlet customerServlet at " + request.getContextPath () + "</h1>");
            out.println("</body>");
            out.println("</html>");
             */
        } finally {            
       //     out.close();
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(customerServlet.class.getName()).log(Level.SEVERE, null, ex);
        } catch (JRException ex) {
            Logger.getLogger(customerServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        try {
            processRequest(request, response);
        } catch (SQLException ex) {
            Logger.getLogger(customerServlet.class.getName()).log(Level.SEVERE, null, ex);
        } catch (JRException ex) {
            Logger.getLogger(customerServlet.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
